868247 has 4 divisors (see below), whose sum is σ = 877296. Its totient is φ = 859200.

The previous prime is 868229. The next prime is 868249. The reversal of 868247 is 742868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868247 - 2⁸ = 867991 is a prime.

It is a d-powerful number, because it can be written as 8² + 6⁵ + 2¹⁴ + 8⁴ + 4⁷ + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4379 + ... + 4572.

It is an arithmetic number, because the mean of its divisors is an integer number (219324).

2⁸⁶⁸²⁴⁷ is an apocalyptic number.

868247 is a deficient number, since it is larger than the sum of its proper divisors (9049).

868247 is an equidigital number, since it uses as much as digits as its factorization.

868247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048.

The product of its digits is 21504, while the sum is 35.

The square root of 868247 is about 931.7977248309. The cubic root of 868247 is about 95.3998658045.

The spelling of 868247 in words is "eight hundred sixty-eight thousand, two hundred forty-seven".